Rhododendron 'Bluenose', which is a Brueckner hybrid documented as Rhododendron dauricum var. sempervirens X 'Russautinii' has been determined to be a triploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca Oliveira, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
Summary of Ploidy Levels
Diploid Rhododendron dauricum,
Triploid 'April Rhapsody',
Triploid 'Bluenose',
Triploid 'Purple Gem',
Tetraploid Rhododendron augustinii
Source: RareFind Nursery
John and Sally Perkins
